388 LABIATAE 



Herbage soft-villous or glandular-vUlous; leaves oblong to oval or ovate-lanceolate, costate- 

 veined; corolla 2 to 3 lines long. 

 Sof t-villous, seldom glandular ; leaves oblong to oval ; calyx -lobes narrovr ; corolla 3 lines 



long 2. T. ohlongum. 



Glandular-villous; leaves lanceolate; calyx-lobes broad; corolla 2 lines long 



3. T. simulatum. 

 Corolla commonly 3 to 6 lines long, the tube exserted from the calyx; nutlets rugose-papillate (or 

 the ridges obscured by tomentum), at least 1 line long (except in var. of T. laxiim). 



Leaves petioled; stems diffusely branched, rather sparsely leafy; cymes somewhat loose 



4. T. Jaxum. 

 Leaves sessile or nearly so ; stems mostly erectly branching from below, densely leafy ; cymes 

 dense. 

 Corolla 5 to 6 lines long ; leaves ovate-lanceolate or narrower ; nutlets merely setulose, the 



ridges evident 5. T. lanceolatum. 



Corolla 3 to 4 lines long; leaves broadly ovate; nutlets densely pubescent, the ridges ob- 

 scure 6. T. ovatum. 



B. Low shrubs; cymes aggregated in a spike-like thyrse, the thyrse sparingly leafy with reduced 



leaves or quite leafless above. 



Corolla 9 to 11 lines long, the tube plainly exserted; cymes dense, subsessile 7. T. lanatum. 



Corolla 4 to 6 lines long, the tube barely exserted; cymes open, on peduncles 3 to 4 lines long 



8. T. parishii. 



1. T. micranthum Gray. Stem simple or brauched from the base, 3 to 9 inches 

 high, leafy to the summit ; herbage ashy-pubescent, somewhat glandular ; leaf -blades 

 lanceolate to linear, y^, to 1^/4 inches long, narrowed at base into short petioles; 

 cymes borne iu all but the lower axils, 3 to 7-flowered, pedunculate, shorter than the 

 leaves; calj'x campanulate, the lanceolate lobes little longer than the tube; corolla 

 1 line long, little exceeding the calyx ; stamens moderately exserted; nutlets % line 

 long, reticulately and finely ridged, the ridges at summit hispidulose with spread- 

 ing hairs. 



Open pine forests, 6800 to 8200 feet, very local : San Bernardino and San Jacinto 

 mountains. Also in northern Lower California. July-Aug. 



Geog. note. — This species is representative of the narrow endemics in the mountains of South- 

 ern California. It is in addition highly localized in its occurrence and of California collections 

 only five stations are here presently available, three in the San Bernardino Mts. (Holcomb Valley, 

 ace. Peirson; Bear Valley, Parish 1473; Little Bear Valley) and two in the San Jacinto Mts. 

 (Strawberry Valley; Hidden Lake, C. V. Meyer 565). It is, however, "frequently found through- 

 out the pine belt on Mt. San Jacinto" (Univ. Cal. Publ. Bot. 1:114). 



Refs. — Trichostema mickanthdm Gray, Syn. Fl. 2:348 (1878), type loc. Bear Valley, San 

 Bernardino Mts., Parry 4' Lemmon; Jepson, Man. 862 (1925). 



2. T. oblongtun Benth. Mountain Blue Curls. Stems erect, simple or 

 branched below, 6 to 13 inches high ; herbage villous or the leaves pubescent, the 

 stems sometimes glandular; leaf -blades oval or oblong (sometimes oblong-lanceo- 

 late), with narrowed base, I/2 to 11.-2 inches long, the petioles mostly short, I/4 to 1 

 (or 3) lines long; cymes glomerate, many-flowered, borne in all the leaf-axils except 

 the lowest, short-pedunculate ; calyx villous, its lobes narrow, attenuate, longer than 

 the tube, nearly equaling the corolla, accrescent; corolla 3 lines long, lavender- 

 purple, the middle lobe of lower lip white with a purple spot at base, the cleft be- 

 tween lobes of upper lip deeper than sinuses between the two lips ; middle lobe of 

 lower lip concave or bowl-shaped ; filaments 4 to 5 lines long ; nutlets reticulately 

 ridged, the ridges finely hispidulose. 



Moist places in mountain valleys and flats, 200 or mostly 2000 to 7400 feet : 

 Cuyamaca and San Bernardino mountains; Sierra Nevada from Tulare Co. to 

 Modoc Co. and eastern Siskiyou Co. ; North Coast Ranges from Lake Co. to Hum- 

 boldt Co. North to Washington. June- Aug. 



Note on the corolla. — In shape and position of its lobes, the corolla of Trichostema oblonjjum 

 is distinctive. The lobes of the upper lip and the lateral lobes of the lower lip are equal, of the 

 same size, shape and color. These lobes, one from each lip, are turned right and left in parallel 

 pairs and are approximate by their tips. The middle lobe of lower lip is subtruncatish at apex. 



Locs. — S. Cal. mts.: Cuyamaca ; Arrowhead Lake, San Bernardino Mts., Bramtton 1041 ; Bluff 

 Lake, San Bernardino Mts., J. Grinnell. Sierra Nevada: Little Kern River near Trout Mdws., 



